Unfortunately, I only seem to find statistics for the consumption of instant noodles, not noodles that are healthily made by restaurants or at home. Whereas Italy has the highest consumption of pasta, which includes all types as well as noodles, China eats the most instant noodles.
Indonesia is not far behind. It is easy to see why: so easy and so cheap. There is a worldwide demand for instant noodles. Apart from anything else, lazy parents can leave their children to prepare their own 'meal' by having packs of instant noodles available.